--- Mum, I’m going to visit my aunt. What about a week? --- A week is too long. Try to be back in a ______ of days. 

Students build up their vocabularies by         of reading more.

The meetings are very short, so there is little _____ to have a real discussion.

Being able to speak another language fluently is a great          when you are looking for a job.

For the sake of her daughter’s health, she decided to move to a warm ______.